Don’t worry, you’re not seeing double... not that I know, that is, it’s still quite early for that, isn’t it? To illustrate that experience, though - let’s have a look at some actors playing with opposite themselves.Which of course has been gotten increasingly easier with the rise of CGI, so we may see a lot more doppelgängers, twins, lookalikes and clones in the future. (Arnold seems to have done it a lot, and Terminator Genisys isn’t even in the video...)